Federal Plan Requirements for Other Solid Waste Incineration Units That Commenced Construction on or Before August 31, 2020, and Have Not Been Modified or Reconstructed After August 29, 2025
Key claim: The EPA is proposing a federal plan to implement 2025 revised emission guidelines for existing other solid waste incineration units in states or tribal lands that fail to submit approvable plans by June 30, 2027.
Abstract
(Proposed Rule · Environmental Protection Agency) The U.S. Environmental Protection Agency (EPA) is proposing a Federal plan to implement the revised emission guidelines for existing other solid waste incineration (OSWI) units. The EPA promulgated emission guidelines for existing OSWI units in 2005 and revised the emission guidelines on June 30, 2025. If a State or Tribe with existing OSWI units subject to the 2025 revised OSWI emission guidelines does not submit an approvable plan by June 30, 2027, the EPA will develop, implement, and enforce a Federal plan for existing OSWI units located in that State or area of Indian Country. This action proposes a Federal plan to implement the 2025 revised OSWI units emission guidelines for existing OSWI units located in States and on Tribal lands without effective State or Tribal plans by the effective date of this Federal plan.
Why this matters
Federal plans backstop state and tribal implementation of Clean Air Act Section 111(d)/129 emission guidelines, ensuring existing incinerators face uniform limits on pollutants like dioxins, mercury, and particulate matter even where states decline to act. For operators, this determines compliance costs and permitting timelines; for nearby communities, it sets the practical floor for air-quality protection from waste incineration.